10666450651 has 2 divisors, whose sum is σ = 10666450652. Its totient is φ = 10666450650.

The previous prime is 10666450649. The next prime is 10666450661. The reversal of 10666450651 is 15605466601.

It is a weak prime.

It is an emirp because it is prime and its reverse (15605466601) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10666450651 - 2¹ = 10666450649 is a prime.

It is a super-3 number, since 3×10666450651³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

Together with 10666450649, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (10666450631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5333225325 + 5333225326.

It is an arithmetic number, because the mean of its divisors is an integer number (5333225326).

Almost surely, 2^10666450651 is an apocalyptic number.

10666450651 is a deficient number, since it is larger than the sum of its proper divisors (1).

10666450651 is an equidigital number, since it uses as much as digits as its factorization.

10666450651 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 129600, while the sum is 40.

The spelling of 10666450651 in words is "ten billion, six hundred sixty-six million, four hundred fifty thousand, six hundred fifty-one".